End location: 0.5 miles north of Lone Tree, IA
End lat/lon: 41.5039 / -91.4301

Radar Reflectivity

Radar Velocity

Survey summary: A team from the National Weather Service Quad Cities Forecast Office surveyed the area around Lone Tree late this morning. No damage was found. The tornado path information is estimated from witnesses and radar. Several witnesses described a funnel that went up and down numerous times. Photo and video documentation show that a tornado did touch down at least briefly to the west and northwest of town.

EF scale: The Enhanced Fujita scale classifies tornadoes into the following categories:

EF0...weak......65 to 85 mph

EF1...weak......86 to 110 mph

EF2...strong....111 to 135 mph

EF3...strong....136 to 165 mph

EF4...violent...166 to 200 mph

EF5...violent...>200 mph

Note: The information on this page is preliminary and subject to change pending final review of the event and publication in NWS Storm Data.